Répondre :
bonjour
1 ) 2 x 1/2 = 2 /2 = 1
2 ) 10 x 1/10 = 10/10 = 1
3 ) 5 x 1/5 = 5 /5 = 1
4) - 8 x - 1/8 = 8/8 = 1
5 ) 0.4 x 1/0.4 = 0.4 / 0.4 = 1
6 ) - 0.01 x - 1 /0.01 = 1
nombre 2 10 5 -8 0.4 - 100
inverse 1/2 1/10 1/5 - 1/8 1/0.4 - 1 /100
bonne AM